title: Design and preparation of a core-shell metal-organic framework for selective CO2 capture.
abstract: The design of a core-shell metal-organic framework comprising a porous bio-MOF-11/14 mixed core and a less porous bio-MOF-14 shell is reported. The growth of the MOF shell was directly observed and supported by SEM and PXRD. The resulting core-shell material exhibits 30% higher CO2 uptake than bio-MOF-14 and low N2 uptake in comparison to the core. When the core-shell architecture is destroyed by fracturing the crystallites via grinding, the amount of N2 adsorbed doubles but the CO2 adsorption capacity remains the same. Finally, the more water stable bio-MOF-14 shell serves to prevent degradation of the water-sensitive core in aqueous environments, as evidenced by SEM and PXRD.
authors.affiliation: Department of Chemistry, University of Pittsburgh, 219 Parkman Avenue, Pittsburgh, Pennsylvania 15260, USA.
authors.forename: Tao
authors.initials: T
authors.lastname: Li
authors.forename: Jeanne E
authors.initials: JE
authors.lastname: Sullivan
authors.forename: Nathaniel L
authors.initials: NL
authors.lastname: Rosi
mesh_terms: D002245:Carbon Dioxide / Q000737:chemistry*; D015394:Molecular Structure; D009942:Organometallic Compounds / Q000138:chemical synthesis* / Q000737:chemistry; D010316:Particle Size; D013499:Surface Properties
chemical_list: D009942:Organometallic Compounds; D002245:Carbon Dioxide